38.56% is the change from 376 to 521
Calculation steps:
[( 521 - 376 ) ÷ 376] x 100 = 38.56%
Formula
Percentage change = [(521 - 376) / 376] x 100
Subtract the new number by the original number
521 - 376 = 145
145 ÷ 376 = 0.38563829787234044
0.38563829787234044 x 100 = 38.56%